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- Newsgroups: comp.sys.intel
- Path: sparky!uunet!mcsun!sunic!aun.uninett.no!alf.uib.no!newsroom.bsc.no!izahi
- From: izahi@bsc.no (Raul Izahi Lopez Hernandez)
- Subject: Re: Intel 486 on-chip cache in a multiprocessor config ?
- Message-ID: <1992Sep1.082358.14710@newsroom.bsc.no>
- Sender: usenet@newsroom.bsc.no (Usenet News Administrator)
- Organization: Bergen Scientific Centre, Bergen, NORWAY
- References: <1992Aug31.170710.7898@jpradley.jpr.com>
- Date: Tue, 1 Sep 1992 08:23:58 GMT
- Lines: 18
-
- In article <1992Aug31.170710.7898@jpradley.jpr.com> adykes@jpradley.jpr.com (Al Dykes) writes:
- >Can the 486 on-chip cache maintain cache coherency in
- >a shared memory MP configuration ?
- >
- >Al Dykes
- >---------
- >adykes@jpr.com
-
- Yes, it has bidirectional address lines.
- I don't recall, however, if it can implement Exclusive/Shared/Dirty/Invalid
- status on the cache and source its data to other caches, or will only flush
- the cache or a single line when an address in its cache is given to the chip
- from an outside system.
- --
- -----> All opinions expressed here are my own, not IBM's <-----
- Raul Izahi Lopez Izahi Engineering
- izahi@bsc.no IBM Bergen Environmental Sciences and Solutions Centre
- Thormoehlensgate 55, 5008 Bergen, NORWAY (47-5)54-4653
-